There is no difference between benign and malignant breast cancer, which is a malignant tumor. As long as the diagnosis of breast cancer is confirmed, it must be a malignant tumor, and there is no such thing as benign. Breast cancer is a female malignant tumor with a relatively high incidence rate in clinical practice. There are cancer cells inside the malignant tumor and the tumor will gradually increase in size with the prolongation of time. If not treated in time, metastasis of lymph nodes or even the whole body can occur, which seriously affects the quality of life of patients and shortens their life span. Breast cancer negative generally means that the estrogen and progesterone receptors on the surface of breast cancer cells are negative, and this condition usually indicates that the development of breast cancer in patients may not be associated with estrogen and progesterone stimulation. In addition, endocrine therapy is usually ineffective for this type of breast cancer. However, it is also possible to be her-2 receptor negative, in which case the chances of cure are relatively high. It is recommended that patients consult a professional doctor in detail to ask about the type of disease and take targeted treatment in time to avoid deterioration of the disease.